Couldn't find anything about that with a quick look. Better check that to be sure.
In case of failure, all funds will be returned.
Pre-TGE is considered successful if at least 1,575 ETH have been collected.
TGE is considered successful if at least 7,000 ETH have been collected.
Otherwise, all funds collected will be returned to the participants.
If the company gives a guarantee - it's a reliable company! Only with such a pleasure to work!